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Phytochemical investigation of the aerial parts of Abies holophylla led to the isolation of two new and 40 known compounds. Their structures were established primarily by 1D and 2D NMR spectroscopic techniques. Compound 19 showed the most significant activity against the A549 lung cancer cell line with an IC 50 value of 10.3μg/mL.
Six previously unreported and 11 known terpenoids were isolated from Abies holophylla. The structures of the six compounds were established as two unusual bisabolane sesquiterpenoids, three nortriterpenoids, and one 3,4-seco-triterpenoid based on the detailed analysis of their 1D and 2D NMR spectroscopic data. In addition, electronic circular dichroism (ECD) calculations and molecular orbital (MO)...
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